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Categories / C# Tutorial / Regular Expression

 

New Regex((^d)^d+$^D+$)

using System; using System.Collections.Generic; using System.Globalization; using System.Text; using System.Text.RegularExpressions; using System.Reflection; public class MainClass{    public static void Main(){         Regex r = new Regex(@"(?(^\d)^\d+$|^\D+$)");         Console.WriteLine(r.Match("cat too"));         Console.WriteLine(r.Match("dag"));         Console.WriteLine(r.Match("2else"));    } } cat too dag